iokit/Kernel/IOInterruptController.cpp

87       (getInterruptType(nub, source, &interruptType) == kIOReturnSuccess) &&
131       if (error != kIOReturnSuccess) {
149 	if (error != kIOReturnSuccess) {
215   return kIOReturnSuccess;
236     return kIOReturnSuccess;
257   return kIOReturnSuccess;
277   return kIOReturnSuccess;
309   return kIOReturnSuccess;
334   return kIOReturnSuccess;
351   return kIOReturnSuccess;
443   if (error == kIOReturnSuccess) {
478   return kIOReturnSuccess;
546   return kIOReturnSuccess;
597   return kIOReturnSuccess;
624     return kIOReturnSuccess;
636   return kIOReturnSuccess;
669   return kIOReturnSuccess;
725   return kIOReturnSuccess;